Experimental engineering and manual for testing. For engineers and for students in engineering laboratories (1906)
Carpenter, Rolla C. (Rolla Clinton), 1852-1919 · New York, J. Wiley & Sons; [etc., etc.] · leaf 62
Fig. 6. Fig. 7. If the polar planimeter is so used as to bring in the zero-circle,the case is that of Fig. 6, each end of the line describing an area.The tracing-arm sweeps over the difference between the areadescribed by T (Fig. 9) and the circle made by G about P ascentre. This difference-area is…
Building materials · Machinery
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